Paint a Galaxy Wall Mural

In this post we are showing how to paint a galaxy wall mural that will be the focal wall of our spaceship themed playroom.

Paint a Galaxy Wall Mural

We have DIY project number one of our spaceship themed playroom checked off our list! As you might have guessed we like to have one wall in each room we design be our focal wall. We have done a faux brick wall, a chalkboard art mural, a wood plank wall, a shiplap wall and now we wanted to give a brightly painted mural a try. We are excited to share our how to paint a galaxy wall tutorial.

We were brainstorming how to incorporate color into the spaceship themed playroom we are designing without it being cheesy or overpowering. The walls in the room are gray so we were hoping our focal wall could subtly add some nice color to the space.

We talked about painting a navy or black accent wall but then Brent had the idea to make the focal wall be the window of the spaceship and through the window you can see outer space with cool colors like blues and purples and lots of far off stars to create depth.

I loved that idea and when he showed me his inspiration photo I knew that was the direction that we had to go. So Brent got to doing his artist thing and the results were better than I could imagine.

And he is sharing his technique for getting this look so be sure to check out the video and steps below if you are interested in how to paint a galaxy wall mural.

How To Paint a Galaxy Wall Mural


  • Black of Night SW 6993 Paint (1 Gallon in Cashmere Low Lustre Sheen)
  • High Reflective White SW 7757 Paint (Sample Size)
  • Honorable Blue SW 6811 Paint (Sample Size)
  • Dignity Blue SW 6804 Paint (Sample Size)
  • Flyway SW 6794 Paint (Sample Size)
  • Dewberry SW 6552 Paint (Sample Size)
  • Fully Purple SW 6983 Paint (Sample Size)
  • Kimono Violet SW 6839 Paint (Sample Size)
  • Passionate Purple SW 6981 Paint (Sample Size)
  • Squares of Cardboard
  • 6″ Foam Paint Roller

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Paint a Galaxy Wall Mural Video Tutorial

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Paint a Galaxy Wall Mural Tutorial

Paint a Galaxy Wall Mural

We found a photo for inspiration so first things first we needed to figure out what paint colors to buy that would match the colors in our outer space inspiration photo.

We have found the easiest way to find a color pallet from a photo is to use the Sherwin-Williams ColorSnap® Visualizer App. We opened the app, clicked the explore colors button and then the match a photo button to upload our photo.

The ColorSnap® Visualizer then automatically creates a color pallet from the photo. We fine tuned our color pallet by dragging the colored dots around until we found a color for each of the sections of the galaxy photo.

Painting a Galaxy Wall

Our Galaxy Wall Color Pallet:
Background: Black of Night SW 6993
Stars: High Reflective White SW 7757
Dark Blue: Honorable Blue SW 6811
Blue: Dignity Blue SW 6804
Light Blue: Flyway SW 6794
Dark Purple: Dewberry SW 6552
Purples: Fully Purple SW 6983 & Kimono Violet SW 6839
Light Purple: Passionate Purple SW 6981

Painting a Galaxy Wall

Courtney’s dad was nice enough to paint the black background color. After it dried, we poured a small amount of our darkest blue color (Honorable Blue) onto a large square piece of cardboard. Using our photo as reference, we applied the dark blue paint with a 6 inch foam roller.

Painting a Galaxy Wall

Before the darkest blue dried, we next applied all the colors that were going to touch the darkest blue colors. By doing it before it dried, we could mix the colors organically with the foam roller.

Painting a Galaxy Wall

Painting a Galaxy Wall

We started with the light blue (Flyway) in the center and moved on to the darkest purple (Dewberry) at the top.

Painting a Galaxy Wall
Painting a Galaxy Wall

Once the entire wall was covered with the dark blue, the dark purple, and the light blue, we mixed in the other blue and purple variations. To blend the colors we overlapped them at the edge.

Painting a Galaxy Wall

Before painting the stars, we let all of the background colors dry for 24 hours. The stars are great at creating depth when applied at varying brightnesses.

We started in the dark blue area again with the same dark blue paint but mixed in a few drops of white paint. Then painted a variety of dot sizes all over the dark blue area.

Our general rule of thumb is the star paint should always be lighter than the background color and be the same hue. So blue stars go on the blue background and purple stars go on the purple background.

White dots can go anywhere on the wall but the light blue area in the center of the wall only gets light blue or white stars that are lighter than the background.

Paint a Galaxy Wall Mural

Paint a Galaxy Wall Mural

The galaxy wall mural really sets the stage for this room and is getting us excited about the rest of the DIY projects we have planned for the space.

We have a few more things to incorporate on this wall before it is completely finished but it has already captured our one year old’s attention. He likes to crawl over to it and run his hands across the stars. And when the sun comes through the blinds, it creates a shooting star effect which is just a random added bonus!


  • I painted my daughters ceiling using a method heavily based on what you guys did here. It turned out great. I would like your permission to reference this post in what I did in my blog

  • I came across this video and I fell in love. My son is super excited about space and has been dying for us to paint his bedroom. I have already painted the wall black and I’m super excited to try tomorrow to mix the other colors. You made it seem achievable and look amazing. I can’t wait to see how it’s going to turn out. I might be more excited than my son!!

    • Hi Samantha- That is awesome to hear that you are painting a galaxy wall mural! I’m sure your son will love it. I love ours probably more than our son but he is only two. Ha. We would love to see how it turns out. Have fun painting tomorrow. 🙂 Thanks so much for the kind words. – Courtney

  • Do you think you could mix some glow in the dark paint in with your white to make the stars glow? My daughter wants this wall but I think if I could make it glow, it’d be a fun surprise!

  • I would love to see what the other walls of the galaxy room look like. We are also just considering painting the galaxy on one wall. I was thinking of using one of the solid colors (likely a blue) on the other walls.

    • Hi Jaci! We are slacking on sharing our playroom progress but the other walls are a light gray called Repose Gray by Sherwin-Williams. Our thought is to eventually frame this wall so it looks like the galaxy is outside the window. The other walls are the color of the spaceship. We will share pictures of the other walls soon. A blue would look great too!


  • I’m making a small galaxy room in my house, and that includes painting the walls and the ceiling. I have tried painting a galaxy on the ceiling but it hasn’t been working so far, but your instructions will help me a lot. Thanks for giving me the inspiration to try again!

  • Oh my gosh, my boyfriend and I were just talking about doing something new to our room. I think we have a winner. I love the way yall explained it. You just got a new follower:)

  • Very nice; I am going to give this a go in my kids room (thank you for making this seem achievable to a layman) just out of interest what did you do with the other walls and ceiling in the room?

    • Thanks David! Your kids will love it. Since we are going with a spaceship theme, we painted the other walls a light gray (Repose Gray from Sherwin-Williams). We left the ceiling the white since the ceiling in that room is pretty low. We would love to see a photo of how it turns out. 🙂

  • This is great! And thanks so much for such a great tutorial, it has given me the confidence to try it! I have already painted the wall a satin black (perfect score from the oops shelf at Lowes) but I am wondering what sheen you used for the colors? Are the galaxy colors a satin or more glossy? Thanks again for the awesome tutorial.

    • It is great to hear that you like the galaxy wall mural. Ideally, all the paint would be the same sheen. We prefer satin because it creates fewer reflections/shiny spots on the wall preventing you from being able to see the mural clearly. When you finish your mural please share a picture via email inspired[at] or tag us in a photo of your finished project on social media @grayhousestudio on Instagram/Twitter or our Facebook page use #grayhousestudio

  • This is so awesome and your tutorial has given me the confidence to try it! I’ve already painted the wall matte black but realized when I go to buy the colors….what sheen do you suggest using? Should they be satin or flat or glossy?

  • Thanks, I can see making this for almost anything, a wooden box, a tee shirt, a bathroom door, a wooden crate … what fun! Very well done and perfect colors!

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